TY - JOUR AU - Howard, Andrew W. DO - doi:10.1302/0301-620X.92BSUPP_I.0920039d UR - https://doi.org/10.1302/0301-620X.92BSUPP_I.0920039d TI - PAPER 188: RANDOMIZED TRIAL COMPARING ARM FRACTURE RATES ON SCHOOL PLAYGROUNDS WITH EITHER SAND OR ENGINEERED WOOD FIBER SURFACES. T2 - Orthopaedic Proceedings VL - 92-B IS - SUPP_I PY - 2010 SP - 39 EP - 39 ER -